NEW YORK ( TheStreet) -- Did the market turn from good to bad overnight? Are the data bad enough to warrant selling everything? "Not at all," Jim Cramer told his "Mad Money" TV show viewers Thursday.

Cramer said that while there are indeed some things to worry about, there are also a lot of bullish macro themes that are still intact.

While the traders may be focusing on whether Google (GOOG) can hit $1,000 a share or whether Apple (AAPL) will be releasing a wristwatch, Cramer said he remains focused on what's working -- things like housing, autos, lending, aerospace, energy and, of course, mergers.

When it comes to housing, we're still not building enough homes, said Cramer, and while the traders only read the headlines of Toll Brothers (TOL) earnings, deep inside the 53-page transcript of the company's conference call investors can learn that Toll Brothers is seeing strong demand and a 57% increase in its backlog.

Autos are also selling, said Cramer, as new car builds continue to rise and used-car sales remain strong after Hurricane Sandy. As we learned from American Electric Power (AEP) earlier this week, oil and gas continues to boom in the U.S. leading to cheap energy for utilities, manufacturers and chemical companies. In the banking world, we're seeing lending picking up for commercial real estate and the banks continue to fund a big round of mergers and acquisitions.

Yes, there are concerns in the market, Cramer concluded, but not everything is bad, which is why investors need to be opportunistic and take profits in their winners and continue buying the themes that are working.

All the Stock That Fits

Cramer said he's finally turned the page on the stock of the New York Times (NYT) , admitting that after years of hating the company, now is indeed the time to be positive.

It's no secret that the newspaper stocks have been in trouble for years. As free content on the Web became the norm, newspapers struggled, and many failed, to offer a free service that also drew in enough advertisers to pay the bills. But in March 2011, the Times took a different approach, putting its premium content behind a paywall, making readers pay for the privilege of accessing the content.

That strategy, panned at the time, appears to be working, said Cramer. Paid subscribers were up 13% quarter over quarter, allowing the Times to make more money from paid circulation than it did from advertising for the first time in its history.

In addition, Cramer said the Times has been selling non-core assets, including About.com and most recently the Boston Globe , allowing it to focus on its core business -- producing quality content and charging people for it. Cramer said with this new focus, the Times may now be in a position to sell itself, something that would have never happened with so many ancillary businesses.